Flue connection for furnaces.



No. 692,240. Patented Feb. 4, I902.

S. C. COLLIN. FLUE CONNECTION FOR FURNACES.

(Application filed Aug. 9, 1901.) (No Model.) 2 Sheets-$heet I.

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No. 692,240. Patented Feb. 4, I902.

S. C. COLLIN.

FLUE CONNECTION FOR FURNACES.

(Application filed Aug. 9, 1901.) (No Model.) 2 Shsets-Sheet 2.

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PATENT OFFICE.

SIMON O. COLLIN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR. OF ONE- IIALF TO WVILLIAM l/VHITE, JR., OF PITTSBURG, PENNSYLVANIA.

FLUE CONNECTION FOR FURNACES.

SPECIFICATION formingpart of Letters Patent No. 692,240, dated February 4, 1902.

Application filed August 9,1901. Serial No. 71,477. (No model.)

To all whom, it may concern:

Be it known that I, SIMON O. COLLIN, acitizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Flue Connections for Furnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable oth- 1o ers skilled in the art to-which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

I5 Ihis invention relates to an improved flue connection arranged to be interposed between an air or gas supply pipe and a furnace-i11- let in a manner to permit ready disconnection when desired, the flue connection, which is preferablyin the form of an elbow, being designed for use more especially with furnaces of the open-hearth tilting type, whereby the tilting operation is greatly facilitated.

The invention also contemplates a flue connection which is protected against the action of heat and which in both its sealing and unsealing adjustments has an air or gas tight joint with the supply-pipe.

The nature of the invention will be readily comprehended, reference being had to the following detailed description and to the accompanying drawings, in which the invention is illustrated in its perferred form, al though I desire it understood that many 5 changes in construction may be made without departing from the spirit of the invention.

In the drawings, Figure 1 is a vertical central sectional view of a fine connection embodying my invention, the connection being shown as sealing the opening of a furnace and dotted lines indicating the unsealing position of the connection. Fig. 2 is a side elevation of the flue connection. Fig. 3 is a 5 front elevation of a series of line connections, two of which are for air and the other for gas.

Referring to the drawings by letter, A denotes the air or gas supply pipe, at the upper end of which is a well B, formed by an outer annular wall A and an inner concentric wall A having a height preferably greater than that of the outer wall.

0 designates the furnace, which in the drawings is of the open-hearth tilting type and is provided with openings for air and for gas, the opening 0 (shown in Fig. 1) being for the latter fluid.

D isjthe 11 no conneetion,preferably of elbow form,having an aperture corresponding to the size of the furnace-openingc and the supplypipe opening. At its upper end is an annular chamberE for water, the outer side of the chamber seating in practice against the furnace-wall about the furnace-opening.

E is an annular chamber at the lower end of the elbow in communication with a chamber E ,'which partly or wholly surrounds the elbow. Water is supplied to the chambers E E E by a pipef, and g g are preferably valved drain-pipes,whioh lead from the cham- 7o bers E E into the well B. In the well is an overflow-pipe h to maintain a predetermined water-level. Depending from the lower end of the elbow is a flange (Z. The elbows are each supported by flanged wheels II at each side thereof,which engage parallel track-rails J J, preferably secured to or forming a part of the outer wall A on the supply-pipe A. Fixed to an end of the axle i of the wheels I is a lever K.

In operation water is continuously admitted to the water-chan1bers and passes therefrom through the drain-pipes into the well, from whence it is carried off through the overflow-pipe. The flange (1, depending from 85 the lower end of the elbow, extends into the well B below the level of the water therein, providing between the elbow and supply-pipe a water-seal connection, whereby escape of gas or air is eifectually prevented. The el- 0 bow is, through its wheel and rail support, movable to bring its upper end in seating position against the furnace-wall about its opening to establish a connection between the supply-pipe and furnace-opening, as shown 5 in full lines in Fig. 1, and is also movable to carry its upper end away from the'furnaceopening to permit tilting of the furnace and also to cut off from the furnace the air or gas supply, the retracted position of the elbow I00 being indicated by dotted lines in said figure. Said movements of the elbow may be accomplished in a variety of ways, but preferably by moving the lever K to rotate the supporting and traction wheels I.

In both of the stated positions of the elbow and during the movement of the latter the flange d is submerged in the water contained in the well B, and therefore the water-seal connection between the elbow and supplypipe is at all times maintained and leakage of air or gas prevented.

The elbow is preferably constructed of castiron lined with refractory material, such as fire-brick. Preferably three elbows are provided at each end of the furnace, two of which are for air and the other or central elbow for gas. \Vhen natural gas or coke-oven gas is used, the gas connection is made at the nozzle Z. A ring m is provided at the top of the elbow to facilitate the handling of the latter in assemblage and repairs.

It will be understood thatin the movement of the elbows the drain-pipes trail in the water contained in the well and that the waterpipe fhas preferably a flexible connection with the water-supply.

The provision of the water-jackets, located especially at the points shown and described, greatly increases the durability and eifecti veness of the elbow and materially reduces the labor and expense attending the operation of open-hearth tilting and other types of furnaces.

Iclaim as my invention 1. The combination of a supply-pipe, a water-containing receptacle around the upper end of the supply-pipe, an elbow having a surrounding water-jacket and provided at its lower end with an annular flange depending into said water-containing receptacle to provide a watersealed connection between the supply-pipe and elbow, means for supporting the elbow to permit lateral movement thereof to and from the furnace-opening, a water-supply pipe leading to the water-jacket, a drainpipe connection between the water jacket and receptacle, and an overflow-pipe leading from the receptacle.

2. The combination of a supply-pipe, a water-containing receptacle around the upper end of the supply-pipe, an elbow having an upper water-jacketed end adapted to be seated around a furnace-opening and having a lower water-jacketed end and provided with an annular flange depending into the receptacle to provideawater-sealed connection between the supply-pipe and elbow, a watersupply pipe leading to both water jackets, drain-pipes leading from said jackets into the receptacle, an overflow-pipe leading from the receptacle, and means for supporting the elbow to permit lateral movement thereof to and from the furnaceopen ing.

3. The combination of a supply-pipe, a water-containing receptacle around the upper end of the supply-pipe, a water-jacketed el bow providedwith an annular flange depend ing from its lower end into the receptacle to provide a-water-sealed connection between the supply-pipe and elbow, a water-supply pipe leading to the water-jacket, a valved drain-pipe leading from the water-jacket into the receptacle, a drain-pipe leading from the receptacle, wheels on the elbow supported by track-rails, and a lever connected with the wheel-axle to move the elbow to and from the furnace-opening.

In testimony whereof I affix my signature in presence of two witnesses.

SIMON C. COLLIN.

Witnesses:

J. ADAM FRASER, OLIVER S. KEELY. 

